Improvement in dies for making sheet-m etal cans



J. W. FARRELL. Die for Making Sheet-Metal Cans.

No. 222,261. Patented Dec. 2, 1879.

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UNITED STATES PATENT OFFTo JAMES W. FARRELL, OF PHILADELPHIA,PENNSYLVANIA.

IMPROVEMENT lN DIES'FOR MAKING SHEET-METAL CANS.

Specification forming part of Letters Patent No. 222,261, dated December2, 1879; application filed October 6, 1879.

.To all whom it may concern:

Be it known that 1, JAMES W. FARRELL, of the city and county ofPhiladelphia and State of Pennsylvania, have invented a new and usefulImprovement in Dies for Making Sheet-Metal Cans, which improvement isfully set forth in the following specification and accompanyingdrawings, in which Figure l is a top or plan View of the apparatusembodying my invention. Fig. 2 is a vertical section thereof in line aa), Fig. 1. Fig. 3 is a view of an inner corner of one of the jaws ofthe apparatus. Fig. 4 is a vertical section in line y y, Fig. 3, one ofthe die-plates being shown in a solid black line. Fig. 5 is a plan viewof a modification.

Similar letters of reference indicate corresponding parts in the severalfigures.

In the manufacture of sheet-metal cans it is customary to place theshaped bottom or top of the can on a support or bed, the lower edge ofthe body of the can resting in the grooves Suitable jaws or dies arethen advanced against the grooved portions, the effect whereof is tosqueeze and securely clamp together the body and the bottom or the bodyand the top. The strain consequent to such operations often breaks theflange or, working-edge of the bed and the sliding jaws or dies, mattersof considerable expense and inconvenience.

My invention consists in forming the flange of the bed of separate andremovable matched plates, whereby, when the plates are broken,

fractured, or worn, theyfmay be removed and ily removed and replacedbynew ones.

Referring to the drawings, A represents the support or bed forsustaining the bottom of a can during the operations of securing thebody and bottom or top thereof; B, the working-flange, and O theclamping or squeezing jaws or dies, which are actuated to move towardthe can and close the seam of the body and bottom or top, as is wellknown.

, The flange B is constructed of matched plates a separate one from theother, and removably connected to the bed A for displacement of old orbroken plates, and application of new ones and furthermore formed ofquadrilateral pieces, so that one end of each plate abuts against theside of the contiguous plate, by which means I obviate joints at thecorners of the flange, the same result being accomplished byconstructing the plates right angular or shape.

As the clamping or squeezing jaws or dies advance against the corners ofthe can the angles of said dies are subjected to strain and liable tobreak. I therefore cut away the cor ner of each die, so as to formtherein an upper and lower horizontal pocket, preferably with dovetailedsides, and fit into the upper pocket a removable plate, D, which isadapted to work against the metal on the upper side of the flange B andinto the lower pocket, a removable plate, D, to work againstthe metal onthe lower side of said flange, it being noticed that there is a spacebetween the workiug-faces of the plates, so as to receive said metal ofthe can against which the dies are advanced.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The bed provided with a flange'formed of separate and removablematched plates, substantially as and for the purpose set forth.

2. The squeezing-dies G (J, provided with upper and lower removableplates D D fitted in pockets in the corners of said dies, substantiallyas and for the purpose set forth.

J. W. FARRELL.

WVitnesses:

JOHN A. WELDERSHEIM, A. 1?. GRANT.

